FAQs About Yealink Desk Phones
 |  |  |  |  |
|
|---|---|---|---|---|---|
| T31P | T33G | T46U | T54W | T57W | |
| Physical Line Key Buttons | 2 | 4 | 10 | 10 | 29 |
| Total Programmable Keys | 2 | 12 (4 page view) | 27 (3 page view) | 27 (3 page view) | 29 |
| Maximum Line Monitoring Keys | 1 | 11 | 26 | 26 | 28 |
| Supports Sidecar | No | No | Yes, EXP43 | Yes, EXP50 | Yes, EXP50 |
| Ethernet Cable with PoE | 10/100 | 10/100/1000 | 10/100/1000 | 10/100/1000 | 10/100/1000 |
| WiFi Enabled | No | No | WiFi adapter, sold separately | Yes | Yes |
| Display | Grayscale | Color | Color | Color | Color |
| Headset Connection | RJ-9 | RJ-9 | RJ-9 or USB (or Bluetooth, adapter sold separately) | RJ-9, USB, or Bluetooth (built-in) | RJ-9, USB, or Bluetooth (built-in) |
| USB Ports | 0 | 0 | 2 | 1 | 1 |
| USB On-Demand Call Recording | No | No | Yes, with compatible 2.0 USB flash drive (16GB 2.0 USB flash drive is available from POPP and stores up to 500 audio .wav files) | Yes, with compatible 2.0 USB flash drive (16GB 2.0 USB flash drive is available from POPP and stores up to 500 audio .wav files) | Yes, with compatible 2.0 USB flash drive (16GB 2.0 USB flash drive is available from POPP and stores up to 500 audio .wav files) |
| Directory | Auto-Populated | Auto-Populated | Auto-Populated | Auto-Populated | Auto-Populated |